Heat waffle iron. Place egg yolks in large bowl; whites in small bowl. To yolks add buttermilk;beat well. Add flour, baking powder, soda, and salt; beat until smooth. Stir in melted margarine. Beat egg whites until soft peaks form; fold into batter. Bake in hot waffle iron until steaming stops and waffle is golden brown. Serve with syrup of your choice. I like real maple and you only need a little bit!

Side note: If you don't always have buttermilk in your fridge, powdered buttermilk is a great alternative. It is actually the real buttermilk. The stuff we have now is like thin yogurt, which isn't really buttermilk. I got my stuff at Walmart, so you can find it almost anywhere. And isn't expensive. Mine takes 4 tsp powder and 1 c water to make 1 cup buttermilk. Mix the powder in with the flour then add your liquid.